The head of a new pro-Chris Murphy super PAC, which the law says must keep an arm's length from the Democrat, served as a groomsman for the congressman turned Senate frontrunner.

Murphy's campaign acknowledged that Chris VanDeHoef, chairman of Connecticut's Future PAC and a Hartford lobbyist, was a member of Murphy's wedding party five years ago.

The ties between the two friends have become fodder for the rival campaign of Linda McMahon, who is favored to win next month's Republican Senate primary, setting up a potential general election showdown between the two.

"So they're not going to coordinate and communicate for six months?" said Tim Murtaugh, a spokesman for McMahon. "I'm not sure that passes the laugh test."

Murphy mouthpiece Ben Marter dismissed the McMahon campaign's notion of collusion, characterizing it as nothing more than innuendo.

"Chris didn't ask these guys to do this, and we don't have any control over what they do," Marter said. "We're focused on the things we can control: our campaign, our message and our unparalleled and growing grassroots organization."

The couple's anniversary is four days after the Democratic and Republican Senate primaries.

Campaign finance laws limit individual donations to federal candidates to $2,500 for the primary and $2,500 for the general election during the current cycle. The cap on donations to the national parties for individuals is $30,800.

There is no such ceiling for super PACs, however.

Connecticut's Future PAC is seeking to raise $1 million to help Murphy against McMahon, who spent $50 million of her professional wrestling fortune when she ran for Senate two years ago and lost to Democrat Richard Blumenthal.

"The fact is that McMahon is a one-person super PAC, and her attack machine is just designed to distract voters from her miserable record of mistreating her employees and shipping jobs overseas," Marter said.